AMT MLS Medical Laboratory Scientist Vocabulary Game
Exam terms with clues and explanations by OpenExamPrep.
About the AMT MLS Medical Laboratory Scientist Vocabulary Game
A free word game for the AMT MLS Medical Laboratory Scientist exam. Each round shows a clue for one of 20 exam terms across 9 topics. Recall the term, spell it out, then read a short explanation. Rounds pick a random term, so you can keep playing as long as you like.
How to Play
- 1Read the clue and type a term with the right number of letters (3 to 6). Abbreviations count: type the letters only.
- 2Press Check Answer or Enter. Each letter changes color to show how close you are.
- 3You have 6 tries. Stuck? Need a hint? asks the AI tutor for a nudge without giving the term away, and Skip moves to a new term.
- 4After the round, read the explanation, ask the AI to explain it, share your result, or press Next.
- ARight letter, right spot
- AIn the term, wrong spot
- ANot in the term
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Topics in the AMT MLS Medical Laboratory Scientist Vocabulary Game
General laboratory
Chemistry
Hematology
Coagulation
Immunology and serology
Immunohematology
Blood banking
Microbiology
Urinalysis and body fluids
Sources for these terms (18)
- Clinical Laboratory Improvement Amendments (CLIA) · Source checked 2026-11-03
- 1910.1030 - Bloodborne Pathogens · Source checked 2026-11-03
- 1910.1200 - Hazard Communication · Source checked 2026-11-03
- 1.3.5.1. Measures of Location · Source checked 2026-11-03
- Thyroid Tests · Source checked 2026-11-03
- LDL cholesterol - Definition · Source checked 2026-11-03
- Prostate-Specific Antigen (PSA) Test · Source checked 2026-11-03
- Chronic Kidney Disease Tests & Diagnosis · Source checked 2026-11-03
- Blood Tests · Source checked 2026-11-03
- WARFARIN SODIUM- warfarin tablet · Source checked 2026-11-03
- Prothrombin Time Test and INR (PT/INR) · Source checked 2026-11-03
- Rapid Plasma Reagin in Serum, NHANES 2003-2004 · Source checked 2026-11-03
- Anti-Human Globulin Anti-IgG · Source checked 2026-11-03
- RhoGAM and MICRhoGAM · Source checked 2026-11-03
- 21 CFR Part 640 - Additional Standards for Human Blood and Blood Products · Source checked 2026-11-03
- Polymerase Chain Reaction (PCR) Fact Sheet · Source checked 2026-11-03
- Routine Microscopy - KOH Preparation · Source checked 2026-11-03
- Guidance for Over-the-Counter (OTC) Human Chorionic Gonadotropin (hCG) 510(k)s · Source checked 2026-11-03
About the MLS Exam
AMT bachelor's-level generalist clinical laboratory credential. AMT retired the legacy "MT" (Medical Technologist) designation in 2023 and now uses MLS. The current outline has nine domains: general laboratory, chemistry, hematology, coagulation and hemostasis, immunology and serology, immunohematology, blood banking and transfusion, microbiology, and urinalysis and body fluids.
Exam sponsor: AMT. The requirements and fees below concern the certification or admission exam, separate from our free practice resources.
Questions
210 questions
Time Limit
3.5 hours
Passing Score
70 on a 0-100 scale
Reported exam pass rate: 61% in 2025. This describes exam candidates, not OpenExamPrep users or results from using our resources. Exam sponsor website
Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.
Official sources
Frequently Asked Questions
Is the MLS vocabulary game free?
Yes. The game is free to play with no sign-up. Signing in adds AI explanations for any term.
How does the MLS vocabulary game work?
Each round shows a clue for one of 20 MLS terms. Guess the term in six tries: green means the right letter in the right spot, yellow means the letter is in the term but in another spot, and gray means it is not in the term. After the round, read the explanation and play the next term.
Where do the MLS terms come from?
OpenExamPrep researched each term from the AMT content outline and primary sources, listed under Sources on this page. The game is independent study material, not an official exam resource.
What are the Westgard QC rules?
Westgard multi-rule QC: 1-3s (1 control >3SD = REJECT); 1-2s (warning, trigger further evaluation); 2-2s (2 consecutive same side >2SD = reject, systematic error); R-4s (range >4SD between controls = random error); 4-1s (4 consecutive >1SD same side = bias); 10-x (10 consecutive same side of mean = shift). Distinguish random vs systematic error to guide troubleshooting.
How is acute hemolytic transfusion reaction managed?
Most often ABO incompatibility from clerical error. Symptoms: fever, chills, back/flank pain, hemoglobinuria, hypotension, DIC. STOP transfusion immediately, maintain IV access with NS, send remaining unit + post-transfusion blood/urine to blood bank, monitor renal function, supportive care. Investigate cause (recheck sample identity, repeat ABO/Rh on pre/post samples, DAT). Document and report per facility policy.